The largest and the shortest distance of the earth from the sun are `r_(1)` and `r_(2)`, its distance from the sun when it is at the perpendicular to the major axis of the orbit drawn from the sun

Options

A. `(r_(1)+r_(2))/(4)`
B. `(r_(1)+r_(2))/(r_(1)-r_(2))`
C. `(2r_(1)r_(2))/(r_(1)+r_(2))`
D. `(r_(1)+r_(2))/(3)`

Answer

C